Briquette binder and briquette coal composition

Abstract

The invention discloses a briquette binder and a briquette coal composition. The briquette binder contains 2-6 parts by weight of sodium humate, 2-6 parts by weight of bentonite and 2-4 parts by weight of asphalt. The briquette binder is good in performance, low in cost and wide in application range; a prepared briquette coal product has the coal pressing strength capable of reaching more than 550N/ball, the heat intensity capable of reaching more than 300N/ball and the falling strength capable of reaching more than 97 percent and can meet civilian requirements; and the briquette coal product which is prepared from the briquette binder, coal slurry and a certain amount of raw coal mixture can also meet the requirements on industrial gas production.

Description

technical field [0001] The invention relates to a molded coal binder and a molded coal composition. Background technique [0002] Coal slime is a kind of inferior fuel produced in the coal production process, especially in the raw coal washing process. It is characterized by fine particle size, high moisture content, strong water holding capacity, high viscosity, high ash content and low calorific value. Due to the relatively large amount of coal slime produced every year, its storage needs to occupy a large amount of space, which also causes certain pollution to the environment. Due to the low calorific value, the utilization of coal slime also has certain difficulties. [0003] Making coal slime into briquettes is an important direction of coal slime utilization. In the process of making coal slime into briquettes, it is generally necessary to add briquette binders. Briquette binder is a key technology in the process of coal briquette production, and it is also one of th...

AI Technical Summary

Problems solved by technology

These requirements are not only harsh, but also contradictory. For example, most inorganic binders have wide sources and low prices, but poor cohesiveness and increase ash content; most organic binders have good cohesiveness and have a certain amount of heat, but Poor thermal stability and high price; the composite binder formed by mixing inorganic binder and organic binder can theoretically combine the advantages of the two, but due to the large variety of inorganic binders and organic binders, the properties are different It is actually very difficult to choose a composite binder with a suitable type and a reasonable ratio so that it has ideal briquette performance and low price.